/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 18:45:14,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 18:45:14,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 18:45:14,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 18:45:14,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 18:45:14,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 18:45:14,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 18:45:14,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 18:45:14,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 18:45:14,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 18:45:14,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 18:45:14,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 18:45:14,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 18:45:14,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 18:45:14,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 18:45:14,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 18:45:14,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 18:45:14,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 18:45:14,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 18:45:14,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 18:45:14,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 18:45:14,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 18:45:14,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 18:45:14,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 18:45:14,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 18:45:14,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 18:45:14,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 18:45:14,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 18:45:14,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 18:45:14,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 18:45:14,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 18:45:14,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 18:45:14,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 18:45:14,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 18:45:14,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 18:45:14,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 18:45:14,992 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf [2021-01-20 18:45:15,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 18:45:15,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 18:45:15,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 18:45:15,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 18:45:15,053 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 18:45:15,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 18:45:15,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 18:45:15,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 18:45:15,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 18:45:15,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 18:45:15,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 18:45:15,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 18:45:15,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 18:45:15,057 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 18:45:15,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 18:45:15,057 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 18:45:15,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 18:45:15,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 18:45:15,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 18:45:15,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 18:45:15,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 18:45:15,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 18:45:15,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 18:45:15,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 18:45:15,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 18:45:15,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 18:45:15,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 18:45:15,060 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 18:45:15,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 18:45:15,061 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 18:45:15,061 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 18:45:15,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 18:45:15,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 18:45:15,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 18:45:15,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 18:45:15,556 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 18:45:15,557 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 18:45:15,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-01-20 18:45:15,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95782e0b5/3460ec47da0846e3b0d133a74f2d1b1d/FLAG59cea0ded [2021-01-20 18:45:16,304 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 18:45:16,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-01-20 18:45:16,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95782e0b5/3460ec47da0846e3b0d133a74f2d1b1d/FLAG59cea0ded [2021-01-20 18:45:16,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95782e0b5/3460ec47da0846e3b0d133a74f2d1b1d [2021-01-20 18:45:16,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 18:45:16,598 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 18:45:16,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 18:45:16,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 18:45:16,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 18:45:16,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 06:45:16" (1/1) ... [2021-01-20 18:45:16,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507126d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:45:16, skipping insertion in model container [2021-01-20 18:45:16,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 06:45:16" (1/1) ... [2021-01-20 18:45:16,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 18:45:16,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 18:45:17,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 18:45:17,080 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 18:45:17,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 18:45:17,223 INFO L208 MainTranslator]: Completed translation [2021-01-20 18:45:17,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:45:17 WrapperNode [2021-01-20 18:45:17,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 18:45:17,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 18:45:17,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 18:45:17,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 18:45:17,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:45:17" (1/1) ... [2021-01-20 18:45:17,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:45:17" (1/1) ... [2021-01-20 18:45:17,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 18:45:17,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 18:45:17,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 18:45:17,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 18:45:17,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:45:17" (1/1) ... [2021-01-20 18:45:17,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:45:17" (1/1) ... [2021-01-20 18:45:17,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:45:17" (1/1) ... [2021-01-20 18:45:17,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:45:17" (1/1) ... [2021-01-20 18:45:17,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:45:17" (1/1) ... [2021-01-20 18:45:17,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:45:17" (1/1) ... [2021-01-20 18:45:17,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:45:17" (1/1) ... [2021-01-20 18:45:17,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 18:45:17,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 18:45:17,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 18:45:17,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 18:45:17,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:45:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 18:45:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-01-20 18:45:17,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-01-20 18:45:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 18:45:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 18:45:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 18:45:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 18:45:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 18:45:17,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 18:45:17,455 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 18:45:18,277 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 18:45:18,277 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2021-01-20 18:45:18,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 06:45:18 BoogieIcfgContainer [2021-01-20 18:45:18,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 18:45:18,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 18:45:18,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 18:45:18,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 18:45:18,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 06:45:16" (1/3) ... [2021-01-20 18:45:18,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66340373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 06:45:18, skipping insertion in model container [2021-01-20 18:45:18,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:45:17" (2/3) ... [2021-01-20 18:45:18,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66340373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 06:45:18, skipping insertion in model container [2021-01-20 18:45:18,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 06:45:18" (3/3) ... [2021-01-20 18:45:18,289 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2021-01-20 18:45:18,304 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 18:45:18,305 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 18:45:18,309 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-20 18:45:18,310 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 18:45:18,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,337 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,337 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,338 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,339 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,339 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,339 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,339 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,339 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,340 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,340 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,340 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,340 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,341 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,341 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,341 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,341 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,341 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,342 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,342 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,342 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,342 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,342 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,343 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,343 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,343 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,343 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,343 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,344 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,344 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,344 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,344 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,344 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,345 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,345 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,345 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,346 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,346 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,346 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,346 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,350 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,350 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,350 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,350 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,350 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,351 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,351 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,352 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:45:18,355 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 18:45:18,369 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 18:45:18,394 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 18:45:18,395 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 18:45:18,395 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 18:45:18,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 18:45:18,395 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 18:45:18,395 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 18:45:18,395 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 18:45:18,395 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 18:45:18,407 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 47 transitions, 99 flow [2021-01-20 18:45:18,431 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 216 states, 212 states have (on average 1.9150943396226414) internal successors, (406), 215 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:45:18,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 212 states have (on average 1.9150943396226414) internal successors, (406), 215 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:45:18,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-20 18:45:18,444 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:45:18,445 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 18:45:18,445 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:45:18,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:45:18,451 INFO L82 PathProgramCache]: Analyzing trace with hash 2060083358, now seen corresponding path program 1 times [2021-01-20 18:45:18,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:45:18,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435231620] [2021-01-20 18:45:18,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:45:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:45:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:45:18,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435231620] [2021-01-20 18:45:18,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:45:18,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-20 18:45:18,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149195348] [2021-01-20 18:45:18,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-20 18:45:18,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:45:18,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-20 18:45:18,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 18:45:18,746 INFO L87 Difference]: Start difference. First operand has 216 states, 212 states have (on average 1.9150943396226414) internal successors, (406), 215 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:45:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:45:18,790 INFO L93 Difference]: Finished difference Result 151 states and 266 transitions. [2021-01-20 18:45:18,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-20 18:45:18,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-01-20 18:45:18,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:45:18,795 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 18:45:18,795 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 266 transitions. Word has length 21 [2021-01-20 18:45:18,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:45:18,796 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 266 transitions. [2021-01-20 18:45:18,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:45:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 266 transitions. [2021-01-20 18:45:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-20 18:45:18,799 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:45:18,799 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 18:45:18,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 18:45:18,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:45:18,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:45:18,801 INFO L82 PathProgramCache]: Analyzing trace with hash 457581125, now seen corresponding path program 1 times [2021-01-20 18:45:18,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:45:18,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454568564] [2021-01-20 18:45:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:45:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:45:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:45:18,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454568564] [2021-01-20 18:45:18,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:45:18,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-20 18:45:18,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081683872] [2021-01-20 18:45:18,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-20 18:45:18,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:45:18,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-20 18:45:18,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 18:45:18,869 INFO L87 Difference]: Start difference. First operand 151 states and 266 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:45:18,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:45:18,900 INFO L93 Difference]: Finished difference Result 140 states and 243 transitions. [2021-01-20 18:45:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-20 18:45:18,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-01-20 18:45:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:45:18,913 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 18:45:18,913 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 243 transitions. Word has length 26 [2021-01-20 18:45:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:45:18,914 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 243 transitions. [2021-01-20 18:45:18,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:45:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 243 transitions. [2021-01-20 18:45:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-20 18:45:18,917 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:45:18,917 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 18:45:18,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 18:45:18,918 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:45:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:45:18,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1252968259, now seen corresponding path program 1 times [2021-01-20 18:45:18,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:45:18,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112685676] [2021-01-20 18:45:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:45:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:45:19,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:45:19,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112685676] [2021-01-20 18:45:19,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:45:19,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-20 18:45:19,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828081307] [2021-01-20 18:45:19,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-20 18:45:19,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:45:19,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-20 18:45:19,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-20 18:45:19,042 INFO L87 Difference]: Start difference. First operand 140 states and 243 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:45:19,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:45:19,102 INFO L93 Difference]: Finished difference Result 123 states and 207 transitions. [2021-01-20 18:45:19,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-20 18:45:19,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-01-20 18:45:19,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:45:19,104 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-20 18:45:19,104 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 207 transitions. Word has length 30 [2021-01-20 18:45:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:45:19,105 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 207 transitions. [2021-01-20 18:45:19,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:45:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 207 transitions. [2021-01-20 18:45:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-20 18:45:19,107 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:45:19,107 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 18:45:19,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 18:45:19,108 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:45:19,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:45:19,109 INFO L82 PathProgramCache]: Analyzing trace with hash 337925380, now seen corresponding path program 1 times [2021-01-20 18:45:19,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:45:19,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356970947] [2021-01-20 18:45:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:45:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:45:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 18:45:19,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356970947] [2021-01-20 18:45:19,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:45:19,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-20 18:45:19,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614899377] [2021-01-20 18:45:19,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-20 18:45:19,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:45:19,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-20 18:45:19,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-20 18:45:19,222 INFO L87 Difference]: Start difference. First operand 123 states and 207 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:45:19,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:45:19,237 INFO L93 Difference]: Finished difference Result 120 states and 202 transitions. [2021-01-20 18:45:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-20 18:45:19,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-01-20 18:45:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:45:19,239 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-20 18:45:19,239 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 202 transitions. Word has length 32 [2021-01-20 18:45:19,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:45:19,240 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 202 transitions. [2021-01-20 18:45:19,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 18:45:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 202 transitions. [2021-01-20 18:45:19,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 18:45:19,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 18:45:19,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 06:45:19 BasicIcfg [2021-01-20 18:45:19,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 18:45:19,250 INFO L168 Benchmark]: Toolchain (without parser) took 2651.30 ms. Allocated memory is still 302.0 MB. Free memory was 277.5 MB in the beginning and 178.9 MB in the end (delta: 98.6 MB). Peak memory consumption was 98.8 MB. Max. memory is 16.0 GB. [2021-01-20 18:45:19,251 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 18:45:19,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 622.07 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 247.6 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-01-20 18:45:19,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.20 ms. Allocated memory is still 302.0 MB. Free memory was 247.6 MB in the beginning and 245.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 18:45:19,254 INFO L168 Benchmark]: Boogie Preprocessor took 48.26 ms. Allocated memory is still 302.0 MB. Free memory was 245.6 MB in the beginning and 284.9 MB in the end (delta: -39.3 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.0 GB. [2021-01-20 18:45:19,254 INFO L168 Benchmark]: RCFGBuilder took 949.08 ms. Allocated memory is still 302.0 MB. Free memory was 284.9 MB in the beginning and 236.6 MB in the end (delta: 48.3 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.0 GB. [2021-01-20 18:45:19,255 INFO L168 Benchmark]: TraceAbstraction took 966.08 ms. Allocated memory is still 302.0 MB. Free memory was 236.6 MB in the beginning and 178.9 MB in the end (delta: 57.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.0 GB. [2021-01-20 18:45:19,263 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 622.07 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 247.6 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 55.20 ms. Allocated memory is still 302.0 MB. Free memory was 247.6 MB in the beginning and 245.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 48.26 ms. Allocated memory is still 302.0 MB. Free memory was 245.6 MB in the beginning and 284.9 MB in the end (delta: -39.3 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.0 GB. * RCFGBuilder took 949.08 ms. Allocated memory is still 302.0 MB. Free memory was 284.9 MB in the beginning and 236.6 MB in the end (delta: 48.3 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 966.08 ms. Allocated memory is still 302.0 MB. Free memory was 236.6 MB in the beginning and 178.9 MB in the end (delta: 57.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 194 SDtfs, 45 SDslu, 245 SDs, 0 SdLazy, 32 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 6590 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...